Electric time-switch.



No. 758,084. l PATENTED APR. 26, 1904.

H. C. LITTLE.

ELECTRIC TIME SWITCH.

APPLIOATION FILED vAUG. ze, 1903.

No MODEL.'

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4UNITED STATES v Patented April 2e, 1904.

PATENT OEEICE.

HENRY LITTLE, OF BOSTON, MASSACHUSETTS.

1 ELECTRIC TIME-SWITCH.

SPECIFICATION forming part of Letters Patent No. r758,084, dated April 26, 1904.

Application filed August 26, 1903.

To all whom, it Nif/Ly concern:

Beit known that I, HENRY C. LITTLE, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Electric-Switch-Controlling Apparatus, of which the following is L ingv circuit, the circuits of anilluminated sign, &c.

The object of the invention is to provide improved means for rendering the switching apparatus operative for a certain number of hours during the day and inoperative for the remainder of the time; and to this end the invention consists in the novel features of conzo struction and arrangement hereinafter described and claimed. v

Of the accompanying drawings, Figure 1 represents a Vertical section of a switch-controlling apparatus embodying my invention. 2 5 Fig. 2 represents a front elevation of the principal operative parts. Fig. 3 represents a vertical section ofthe devices shown in the upper part of Figs. 1 and 2. Fig. 4 represents a rear elevation of the flanged wheel connected 3o with the timing-train. The same reference characters indicate th same parts in all the gures.

In the drawings, 10 represents an arbor operated by a suitable clock-train 11, having a 3 5 spring 12, escapement 13, and balance 14. Said arbor carries a rotary support 15, on which is mounted a yielding contact-arm 16, cooperating with a circular series of fixed contact-pins 17, connected with the respective circuits of the illuminated sign or other apparatus. The specific construction ofthis switching device is immaterial to my present invention.

18 is a timing-clock train operating an arbor 19, on which is fixed a wheel 20, having a flange 21 with a gap 22 therein.

23 24 are the upper and lower sections of a rod mounted in suitable guides or bearings 25 26 and connected by a compensating spring 27. On the rod-section 23 is a lng 28, adapted serial no. 110,888. en man.)

to be engaged by a cam-arm 29, connected with the wheel 20 by a pin 30 and a circular series of holes 31 in said wheel. The rod-section 23 also carries a spring-detent 32, having a beveled end whereby said detent may engage the flange 21 when the rod-section is lifted.

33 is a pivotal catch or detent yieldingly pressed byl a spring 34 into engagement with a projection 35 on the lower rod-section 24 and adapted to be released by an arm 36 on 60 the arbor 10 engaging an ear 37 on the detent.

38 is a spring pressing downwardly on the rod-section 24, and 39 is a spring-stop at the lower end of said rod-section adapted to act as a brake on the periphery of the balance 14.

The operation is as follows: When the rod 23 24 is down, the balance 14 is released by its stop 39 and the arbor 10 is rotated by its train 11, causing the switch-arm 16 to coperate with the switch-pins 17. The timingtrain 18 rotates the arbor 19 once in twentyfour hours', and each time that the cam 29 engages the lug 28 the rod-section 23 is lifted and the spring-catch 32 hangs on the iange 21 of wheel 20, as shown in Fig. 3. The de- 75 tent 33 arrests the rod-section 24 and the compensating spring 27 yields. As soon as the arm 36 engages detent'33, so as to release the rod-section 24, the spring 27 draws said rod-section up until stop 39 arrests the bal- 80 ance 14. Thus the switch-arm 16 is arrested at a predetermined point in its movement and a prompt movement is given to the stop 39. When the notch 22 comes opposite the catch 32, the latter falls through the notch and the rod 23 24 drops, the spring-stop 39 giving the balance 14 a slight starting impetus, and the train 11 and switch arm 16 are thus started in motion again. By adjusting cam 29 on its Wheel 2O the desired intervals of op- 90 eration and non-operation of the switch may be attained.

Iclaim- 1. In a switch controlling apparatus, a switch member, an operating-train therefor having a balance, a timing-train, and a stop for said balance controlled by said timingtrain.

2. In a switch controlling apparatus, a switch member, an operating-train therefor, IOO

a timing-train, and a compensating connection between said trains.

3. In a switchcontrolling apparatus, a switch member, an operating-train therefor', a timing-train, a stop for said operating-train operated by the timing-train, and means for controlling` said stop according to the posi-k tion of the switch member.

4;. In a switch-controlling apparatus, a switch member, an operating-train therefor, a stop for said train, a timing-'train to operate the stop, a resilient connection between the timing-train and stop, and a stop-restraining trip operated by the operating-train C. Fa BROWN, E. BATCHELDER. 

